Re: Userspace process crashes with PREEMPT

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From: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Date: Thu, 19 Aug 2010 09:15:16 -0400 (EDT)

> BTW. two years ago, I reported a bug that userspace programs on sparc64 
> would randomly crash in a few hours with preempt enabled 
> ( http://marc.info/?l=linux-sparc&m=121222607414906&w=4 )
> 
> Now I tried the same workload with 2.6.35 and it is stable with preempt.
> 
> Are you aware that the bug was fixed? Or if not, it may be still lurking 
> there and some unrelated change hid the race condition. Should I bisect 
> the kernel to find out which patch actually fixed (or hid) the bug?

I can't think of anything we did explicitly to fix that.

I'm sure you can find more useful things to do than to try and
bisect that thing down, really :-)
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